Theorylytics
Soukaku
IceSupportSection 6★★★★ A-Rank

Soukaku

Published Jul 19, 2026 · Updated v3.0
Content Ratings
Shiyu DefenseA
Deadly AssaultA
Hollow ZeroB
Should You Pull?YES

Soukaku is a foundational support for Ice teams, providing critical team-wide ATK and Ice DMG buffs. Her ability to transition into these buffs through her flag mechanic makes her essential for optimizing damage output in high-tier content.

Soukaku functions as a dedicated buffer who utilizes a Vortex mechanic to enhance her team's offensive capabilities. By accumulating stacks through EX Specials and Chain Attacks, she activates the 'Fly the Flag' ability, which provides significant ATK bonuses to allies. Her presence enables the 'Frosted Banner' state, granting access to enhanced basic attacks that sustain her role as both a support and sub-DPS.

Ice SupportATK BufferVortex MechanicTeam Energy RegenIce DMG BonusSection 6 MemberFlag Controller

Overview

Quick Build

W-Engine

Bashful Demon

S-rank — ATK, best in slot

Disk Set

Freedom Blues

4-PC · Best in slot

Disk 4

ATK% > CRIT Rate%

Main stat

Disk 5

ATK% > Ice DMG%

Main stat

Disk 6

Energy Regen = ATK%

Substats

CRIT Rate >= CRIT DMG = ATK%

Strengths

  • High team-wide ATK buff potential
  • Strong Ice DMG synergy with passive abilities
  • Efficient Energy recovery for the team
  • Invulnerability frames during key animations
  • Flag mechanic enables flexible buff passing

Weaknesses

  • Buff uptime requires precise rotation management
  • Requires EX Special usage to build Vortex stacks
  • Limited effectiveness outside of Ice-focused teams
  • Dependent on Energy regeneration stats
  • Vortex management can be restrictive in fast-paced combat

Skill Priority

1
Basic AttackHighest

Primary damage source.

2
Special AttackHigh

EX delivers strong damage.

3
Chain AttackMedium

Chain burst.

4
Core PassiveMedium

Passive enhancement.

5
DodgeLow

Negligible.

Stat Priority

1
CRIT Rate75–80%
2
CRIT DMG150–200%
3
ATK2500+
4
Anomaly Proficiency120+
5
HP10000+
6
PEN RatioAs available
Rotation Priority
Miyabi-Lycaon-Soukaku

Use Lycaon for stun, swap to Soukaku for her flag buff, then finish with Miyabi.

Energy
General Ice Team

Ensure you have 3 stacks of Vortex before casting Fly the Flag to maximize the ATK buff.

Vortex Stacks

Review and adjust rotations based on your specific team composition.

W-Engines

S-Rank W-Engines

2
Weeping Cradle

Energy Regen

While off-field, Energy Regen increases by 0.6/0.75/0.9/1.05/1.2 per second. Attacks from the equipper enhance the squad's DMG against a struck target by 10/12.5/15/17.5/20% for 3 seconds. During this period, this effect is further increased by 1.7/2/2.5/3/3.3% every 0.5s, up to a maximum additional increase of 10.2/12/15/18/19.8%. Repeated triggers only refresh its duration without refreshing the DMG increase effect. Passive effects of the same name do not stack.

Why it works —Weeping Cradle offers superior Energy Regen and persistent damage amplification, making it a powerful luxury choice.

A-Rank W-Engines

1
Bashful Demon

ATK%

Increases Ice DMG by 15/17.5/20/22/24%. When launching an EX Special Attack, all squad members' ATK increases by 2/2.3/2.6/2.9/3.2% for 12s, stacking up to 4 times. Retriggering refreshes duration. Passive effects of the same name do not stack.

Why it works —Bashful Demon is ideal for consistent Ice DMG and squad ATK buffs, scaling well with her EX Special usage.

3
Kaboom the Cannon

Energy Regen

When any friendly unit in the squad attacks and hits an enemy, all friendly units' ATK increases by 2.5/2.8/3.2/3.6/4% for 8s, stacking up to 4 times. The duration of each stack is calculated separately, and each friendly unit can provide 1 stack of the buff. Passive effects of the same name do not stack.

Why it works —Kaboom the Cannon is a solid alternative providing consistent squad-wide ATK buffs through normal hits.

4
Slice of Time
Slice of TimeAF2P Best

Energy Regen

Any squad members' Dodge Counter, EX Special Attack, Assist Attack, or Chain Attack respectively generates 20/23/26/29/32 (Dodge) | 25/28.5/32/35.5/40 (Special) | 30/34.5/39/43.5/48 (Assist) | 35/40/45/50/55 (Chain) more Decibels and generates 0.7/0.8/0.9/1/1.1 Energy for the equipper. This effect can trigger once every 12s. The cooldown for each type of attack is independent of others. Passive effects of the same name do not stack.

Why it works —Slice of Time is the best F2P option, focusing on Energy generation to maintain uptime on the flag.

B-Rank W-Engines

5
[Reverb] Mark II

Energy Regen

Launching an EX Special Attack or Chain Attack increases all squad members' Anomaly Mastery and Anomaly Proficiency by 10/12/13/15/16 for 10s. This effect can trigger once every 20s. Passive effects of the same name do not stack.

Disk Drives

Freedom Blues (4-PC)
SFreedom Blues (4-PC)Best in Slot
4PCWhen an EX Special Attack hits an enemy, reduce the target's Anomaly Buildup RES to the equipper's Attribute by 20% for 8s. This effect does not stack with others of the same attribute.
2PC2pc — Anomaly Proficiency +30
Provides essential utility and support capabilities, amplifying the team's overall effectiveness while Soukaku is on-field.

Disk 4

ATK% > CRIT Rate%

Disk 5

ATK% > Ice DMG%

Disk 6

Energy Regen = ATK%

Moonlight Lullaby (4-PC)
AMoonlight Lullaby (4-PC)
4PCWhen the equipper is a Support character and uses an EX Special Attack or Ultimate, the DMG dealt by all squad members increases by 18% for 25s. Repeated triggers reset the duration. Passive effects of the same name do not stack.
2PC2pc — Energy Regen +20%
Offers reliable stat boosts to maintain Soukaku's personal performance while supporting the squad.

Disk 4

ATK% > CRIT Rate%

Disk 5

ATK% > Ice DMG%

Disk 6

Energy Regen = ATK%

Astral Voice (4-PC)
BAstral Voice (4-PC)
4PCWhenever any squad member enters the field using a Quick Assist, all squad members gain 1 stack of Astral, up to a maximum of 3 stacks, and lasting 15s. Repeated triggers reset the duration. Each stack of Astral increases the DMG dealt by the character entering the field using a Quick Assist by 8%. Only one instance of this effect can exist in the same squad.
2PC2pc — ATK +10%

Disk 4

ATK% > CRIT Rate%

Disk 5

ATK% > Ice DMG%

Disk 6

Energy Regen = ATK%

Team Compositions

Soukaku

Soukaku

Support

Miyabi

Miyabi

Anomaly

Yuzuha

Yuzuha

Support

High-usage endgame shell featuring Soukaku, Miyabi, Yuzuha. Built around Soukaku's Support role with teammates covering stun, buffs, or secondary damage.

Agent Synergy
Soukaku
SoukakuSupport

Primary Support — owns the damage / utility identity of this squad.

Miyabi
MiyabiAnomaly

Secondary Anomaly / Disorder partner that amplifies Soukaku's damage windows.

Yuzuha
YuzuhaSupport

Buffs and enables Soukaku with low field time and strong team utility.

Skills & Mindscapes

Skills

Core PassiveBlade Flurry

When Soukaku launches Fly the Flag, her ATK is increased by **10%** up to 500, for **22s**. When consuming Vortex during Fly the Flag, the ATK increase is doubled, up to a max 1000. This buff given can be passed along to characters switching in via Quick Assist or Chain Attacks triggered by Fly the Flag, and it refreshes the duration of the buff.

Additional AbilityGroup Set Meal

When another character in your squad shares the same Attribute or Faction: When Soukaku consumes Vortex to activate Fly the Flag, the Ice DMG of the squad is increased by **20%** for **22s.**.

Basic AttackMaking Rice Cakes

Unleashes up to 3 attacks, dealing Physical DMG.

Basic AttackMaking Rice Cakes (Frosted Banner)

When Frosted Banner is active, press Basic Attack to activate. Unleashes up to 3 faster attacks in front, dealing Ice DMG.

DodgeGrab a Bite

A rapid dodge. Character is invulnerable while using this skill.

Dash Attack50/50

Slashes enemies in front, dealing Physical DMG.

Dodge CounterAway From My Snacks

Slashes enemies in front, dealing Ice DMG. Character is invulnerable while using this skill.

Dash Attack50/50 (Frosted Banner)

When Frosted Banner is active, press Basic Attack during a Dodge to activate. Slashes enemies in front, dealing Ice DMG.

Special AttackCooling Bento

Soukaku releases a wind current in front of her and unleashes her finishing move, dealing Ice DMG. Anti-Interrupt level is increased while using this skill, and DMG taken is reduced by 40%. Holding Special Attack while using this skill allows for a quick transition to Fly the Flag.

EX Special AttackFanning Mosquitoes

Releases wind currents of extended range in front of her, dealing massive Ice DMG. This skill can be used in rapid succession by pressing Special Attack repeatedly. Each use consumes a specified amount of Energy. When Soukaku's Energy is depleted, or you stop pressing the button, she unleashes a powerful finishing move that deals massive Ice DMG. Anti-Interrupt level is increased while using this skill, and her DMG taken is reduced by 40%. Holding Special Attack while using this skill allows for a quick transition to Fly the Flag.

Special AttackRally!

Soukaku plunges her weapon into the ground, morphs it into a flag, and launches Fly the Flag, dealing Ice DMG. Hitting an enemy with Fly the Flag triggers a Quick Assist. Pressing Basic Attack or Special Attack after Fly the Flag activates a Special Attack as she retracts the flag, dealing Ice DMG. If Soukaku owns 3 stacks of Vortex on using Fly the Flag, she consumes all 3 stacks and enters the Frosted Banner state. In the Frosted Banner state, she can unleash an enhanced Basic Attack or an enhanced Dash Attack, dealing massive Ice DMG This effect can last up to 45s or stack up to 6 times. Soukaku's weapon gains Vortexes in the following circumstances: Gains 1 stack of Vortex when launching an EX Special Attack, Gains 1 stack of Vortex when launching a Chain Attack, Gains 3 stacks of Vortex when launching an Ultimate. Soukaku can accumulate a maximum of 3 stacks of Vortex.

Chain AttackPudding Slash

Soukaku quickly unleashes a series of strikes at enemies in front of her and follows up with Fly the Flag, dealing massive Ice DMG. Character is invulnerable while using this skill.

UltimateJumbo Pudding Slash

Soukaku quickly unleashes an extended series of strikes at enemies in front of her and follows up with Fly the Flag, dealing massive Ice DMG. Upon activating this skill, Soukaku enters the Masked state, increasing her CRIT Rate by 15% for 15s. Upon activating this skill, other squad members recover 10 Energy. The next character to switch in gains an additional 20 Energy. Character is invulnerable while using this skill.

Assist Follow-UpSweeping Strike

Press Basic Attack after a Defensive Assist to ac

Mindscapes

1
M1
2
M2
3
M3
4
M4
5
M5
6
M6
M1Uplifting CurrentPull Target

When Soukaku triggers Core Passive: Blade Banner or Additional Ability: Group Set Meal, the buff duration is increased by 8s.

Is it worth getting?

Highly valuable as it extends buff duration significantly, improving rotation reliability.

M2Experimental Charging Module

When Soukaku's Basic Attacks, Dash Attacks, Dodge Counters, or Quick Assist hits an enemy, there's a 15% chance she gains 1 stack of Vortex, triggering up to once per second. When Vortex reaches max stacks, any additional stacks grant Soukaku 1.2 Energy instead.

Is it worth getting?

Useful tempo upgrade — smoother resources, stun windows, or rotation uptime.

M3Attendance Meal Allowance

Basic Attack, Assist, Dodge, Special Attack, and Chain Attack Lv. +2

Is it worth getting?

Skill-level bump only — fine on the path to higher Mindscapes, not a pull goal by itself.

M4Hypothermia

If an enemy is hit by Fly the Flag, the target's Ice RES is reduced by 10% for 8s.

Is it worth getting?

Solid mid-tier Mindscape — worth picking up if you're already invested, not a must-pull alone.

M5Late-Night Snacks

Basic Attack, Assist, Dodge, Special Attack, and Chain Attack Lv. +2

Is it worth getting?

Skill-level bump only — fine on the path to higher Mindscapes, not a pull goal by itself.

M6Northern WindPull Target

While in the Frosted Banner state, the number of usable enhanced Basic Attacks and enhanced Dash Attacks is increased to 12, and also deal 45% more DMG.

Is it worth getting?

Massive damage increase for her enhanced state; makes her a formidable sub-DPS.

Soukaku is viable and competitive at M0. First stop: M2. Endgame target: M2.

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